Added function for reading a catalog

Reviewed-on: episodes-platform/shared-snippets#2
Reviewed-by: asia <asia@noreply.example.org>

matlab/logging/base_logger.m

@@ -10,6 +10,9 @@
 % It follows the Singleton pattern to ensure that only one instance of the logger
 % exists throughout the application.
 %
+% The log file is specified by the environment variable 'APP_LOG_FILE'. If
+% the variable is not set, a default file 'base-logger-log.log' is used.
+%
 % Properties:
 %   fid - (private) The file identifier for the log file. This is used to write logs.
 %
@@ -17,20 +20,20 @@
 %
 %   getInstance() - Retrieves the singleton instance of the logger.
 %
-%   trace(message) - Logs a message with TRACE level.
-%     @param message The message to log.
+%   trace(varargin) - Logs one or more messages with TRACE level.
+%     @param varargin The messages to log. Can be strings, numbers, or MException objects.
 %
-%   debug(message) - Logs a message with DEBUG level.
-%     @param message The message to log.
+%   debug(varargin) - Logs one or more messages with DEBUG level.
+%     @param varargin The messages to log. Can be strings, numbers, or MException objects.
 %
-%   info(message) - Logs a message with INFO level.
-%     @param message The message to log.
+%   info(varargin) - Logs one or more messages with INFO level.
+%     @param varargin The messages to log. Can be strings, numbers, or MException objects.
 %
-%   warning(message) - Logs a message with WARNING level.
-%     @param message The message to log.
+%   warning(varargin) - Logs one or more messages with WARNING level.
+%     @param varargin The messages to log. Can be strings, numbers, or MException objects.
 %
-%   error(message) - Logs a message with ERROR level.
-%     @param message The message to log.
+%   error(varargin) - Logs one or more messages with ERROR level.
+%     @param varargin The messages to log. Can be strings, numbers, or MException objects.
 %
 %   delete() - Destructor method that closes the file identifier when the logger is deleted.
 %

octave/logging/base_logger.m

@@ -10,6 +10,9 @@
 % It follows the Singleton pattern to ensure that only one instance of the logger
 % exists throughout the application.
 %
+% The log file is specified by the environment variable 'APP_LOG_FILE'. If
+% the variable is not set, a default file 'base-logger-log.log' is used.
+%
 % Properties:
 %   fid - (private) The file identifier for the log file. This is used to write logs.
 %
@@ -17,20 +20,20 @@
 %
 %   getInstance() - Retrieves the singleton instance of the logger.
 %
-%   trace(message) - Logs a message with TRACE level.
-%     @param message The message to log.
+%   trace(varargin) - Logs one or more messages with TRACE level.
+%     @param varargin The messages to log. Can be strings, numbers, or MException objects.
 %
-%   debug(message) - Logs a message with DEBUG level.
-%     @param message The message to log.
+%   debug(varargin) - Logs one or more messages with DEBUG level.
+%     @param varargin The messages to log. Can be strings, numbers, or MException objects.
 %
-%   info(message) - Logs a message with INFO level.
-%     @param message The message to log.
+%   info(varargin) - Logs one or more messages with INFO level.
+%     @param varargin The messages to log. Can be strings, numbers, or MException objects.
 %
-%   warning(message) - Logs a message with WARNING level.
-%     @param message The message to log.
+%   warning(varargin) - Logs one or more messages with WARNING level.
+%     @param varargin The messages to log. Can be strings, numbers, or MException objects.
 %
-%   error(message) - Logs a message with ERROR level.
-%     @param message The message to log.
+%   error(varargin) - Logs one or more messages with ERROR level.
+%     @param varargin The messages to log. Can be strings, numbers, or MException objects.
 %
 %   delete() - Destructor method that closes the file identifier when the logger is deleted.
 %

python/catalog/find_catalog_column.py

@@ -20,8 +20,8 @@ def find_catalog_column(catalog, field_name):
     Finds the index of a column in the catalog based on its field name.
 
     Parameters:
-        catalog (np.ndarray): A structured NumPy array representing the catalog, where each row
-                              corresponds to a field with attributes like 'field', 'val', etc.
+        catalog (np.ndarray): A structured NumPy array representing a catalog in EPISODES Platform format:
+                              https://docs.cyfronet.pl/display/ISDOC/Catalogs
         field_name (str): The field name of the entry to search for.
 
     Returns:

python/catalog/read_catalog.py

@@ -0,0 +1,22 @@
+# -----------------
+# Copyright © 2025 ACK Cyfronet AGH, Poland.
+# -----------------
+from scipy.io import loadmat, whosmat
+  
+def read_catalog(catalog_path):
+    """
+    Reads the provided catalog in EPISODES Platform format (https://docs.cyfronet.pl/display/ISDOC/Catalogs)
+
+    Parameters:
+        catalog_path: Path to the catalog file to be read.
+
+    Returns:
+        catalog (np.ndarray): A structured NumPy array representing the catalog.
+
+    Raises:
+        ValueError: If the specified field name is not found in the catalog.
+    """
+    catalog_contents = loadmat(catalog_path, mat_dtype=True)
+    catalog_field_name = whosmat(catalog_path)[0][0] # Getting the name of first non-metadata field
+    catalog = catalog_contents[catalog_field_name][0]
+    return catalog

python/catalog/sort_by_time.py

@@ -16,14 +16,15 @@
 # This work was partially funded by DT-GEO Project.
 # -----------------
 import numpy as np
+from find_catalog_column import find_catalog_column
 
 def sort_by_time(catalog):
     """
-    Sorts the given catalog based on the 'Time' column.
+    Sorts the given catalog based on the 'Time' column. Requires find_catalog_column script to work.
 
     Parameters:
-        catalog (np.ndarray): A structured NumPy array representing the catalog, where each row
-                              contains fields like 'Time', 'ID', and others.
+        catalog (np.ndarray): A structured NumPy array representing a seismic catalog in EPISODES Platform format:
+                              https://docs.cyfronet.pl/display/ISDOC/Seismic+catalog
 
     Returns:
         np.ndarray: The sorted catalog, where rows in 'val' fields are ordered by ascending 'Time' values.
@@ -31,14 +32,7 @@ def sort_by_time(catalog):
     Raises:
         ValueError: If the 'Time' column is not found in the catalog.
     """
-
-    time_col_index = None
-    for idx, col in enumerate(catalog):
-        if col['field'] == "Time":
-            time_col_index = idx
-
-    if time_col_index is None:
-        raise ValueError("No 'Time' field found in the catalog.")
+    time_col_index = find_catalog_column(catalog, 'Time')
 
     time_values = catalog[time_col_index]['val'].flatten()
     sorted_indexes = np.argsort(time_values)